<!DOCTYPE html>
<html lang="zh-cn">
<head>
	<meta charset="utf-8">
	<title>010-标签选择器.html</title>
	<style>
		p{
			color: gray;
		}
		h1{
			color: blue;
		}
	</style>
</head>
<body>
	<h1>title</h1>
	<p>文字1</p>
	<p>文字2</p>
	<p>文字3</p>
</body>
</html>